Real Deal GBB Fill Valve O Ring Large

Is your GBB Magazine leaking again? Place the bottom of the mag in a clear glass of water to see if the leak is coming from the fill valve. 

⁍ Pack of 5

⁍ 70 Durometer Buna- N O rings

⁍ Repair up to 5 magazines with one pack!

Over tightening of the fill valve upon installation can cause the O ring to deform and lose its seal. 

Using Dry Gas such as propane without lubrication could also dry out O rings and cause leaks. 

Keep that thang wet yah yeard ?